John joslyn



IMPROVED GRIMPING MACHINE.

' dlgs dgctnle referat tt in these ettas @mit mit milking ptrt'tf its sume.

To ALLwHOM 1r MAY coNcERN:

Be it known that I, JOHN JosLYN, of Canton,- in the co`unty of St. Lawrence, and State of New York, have invented a new and useful improvement in Boot-Crimping Machines; and I do hereby declare that the following A is a full, clear, and exact xdescription thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

' By thev machine embraced in the present invention, the leather which is to be crimped is drawn between two 'similar plates, having a series of circular depressions or cavities, or their equivalents, in their opposite and parallel faces 'or sides, and in contact with the leather, by means of a suitable shaped former so arranged as to move between the said plates; the circular depressions working the leather, and producing that condensing of such portions of the same as are necessarily fulled, as well as materially aiding in the fulling process, and causing such a hold to be had upon the leather, as it is dra-wn between them, as to force or stretch it -out to the utmost exte'na Having thus in general terms premised the principal feature o f the present invention, I will now proceed to describe the same in detail, reference being had to the accompanying plate of drawings, in which Figure 1 is aplan or top view of the machine. 1 l

Figure 2, a rear elevation; and

Figure 3 a transverse vertical section, taken in the plane of the line :z: fr, iig. 1.

Similar letters ofv reference indicate like parts.

A A, in thedrawings, represent the framework of the machine, which consists of parallel uprights, B B,

secured at their lower ends in feet C, and 'connected together at suitable points of their lengths by cross-bars D- D.- lUpon the upper cross-bars D'l De two similar plates E E are placed, parallel to each other, with their faces or surfaces opposite each other, made with a series of similar semicircular depressions or cavities F F arranged in parallel rows, and extending in avertical direction at an angle of fortyiive-degrees, (452) or nearly so, to that of the plates, from the upper end toward the lower end, or that resting upon the .cross-bars Dz D, where they terminate in semicircular shaped grooves or channels G G extending in the samedirection with the circular /cavitiesj The upper-ends of the plates E are made of an angular shape, with the apex of the angle at a point nearly half way between the two sides of the plates. H H, two gates, hung at one end I upon each side of the upper part of the framework A so as to swing thereon, which gates extend across the said framework backof the plates E. At their ends J is a screw-shaft, K, passing freely through them and freely through the frameV work, with a suitable shaped head, L, upon one end for convenience in turning it so as to press the gates H upon the plates E. On each gate H, half way between its two ends, or nearly so, is a vertical cross-bar, M, 4having in both`ends set screws-N, which, by screwingl in, are made to move the two plates E E toward each other, and thus decrease the space or opening between them, and for the purpose of giving a proper bearing tothe gate H upon the plates E. Between the two uprights B, extending entirely across from one to the other, is arranged a frame, P, having a form, I, at its upper end made of the angular shape shown in the drawings, and its two side pieces Q Q, each made with a toothed rack, It, with which engage the pinionwheels S S of a transverse horizontal shaft, T, turning in suitable bearings of the uprights B. U, a gear-wheel on outer end of shaft 'l and V another bnt'smaller car-wheel havinc crank-handle Wfor turning it, and engaging' with the said gear-wheel U, so that if the crank-handleW be turned, the frame l? will be either raised or lowered, upon such cross-bars D2; friction-rollers X X being provided at suitable points of the uprights B B, bearing against the frame P, to keep it in position as it is moved up and down, as explained. lIn the usel of ,the machine above described, the leather -which isto be crimped is properly laid over and across the upper ends of the two plates E E, the form having been first lifted above the same, andthe plates E as the case may be, moving in and between the cross-bars D2 D2 of the uprights B B, and the plates E resting adjusted to the proper distance apart by means of the set-screws N, when, turning the crank-handle W in, the` y f proper direction, the form is made'to mdve or travel downward, drawing the leather with it, down and between -v 1 'A {.the two plates E E, thereby crimping the same, the circular cavities or depressions working the leather and "i producing a condensing of its particles where most needed in those parts' necessarily fulled, while at the same timey they materially aid the falling process and held the leather, causing it Ato be drawn out -to its utmost extent by the form as it moves down between'the plates E. It is self-evident that the outer part of' a circle impressed and moving over a pliable surfacewould have the effect to spread the material, and that the inner part would have the effect to contract or condense it, but as these cavities have no outer circular form, their action must be to contract or condense the material drawn over them; and'furt'herrnorc, not only do these cavities have the eil'ect to contract or condense the leather, but also to force it toward the angle of the form, from the fact that the edge of the form comes in contact with them -at an angle of forty-tive degrees (45) or thereabouts, allowing the lower half of these cavities'to move along this edge a distance about equal to their diameters, and, gradually closing in upon the leather, compress it in its proper place, asis plainly apparent'from an inspection of iig. 2 in the drawings; the grooves at the bottom of the plate, or the ribs-produced bythem, having the tendency.;- to spread theleather out at thepoints where needed after the crimping has been done as above explained,

thereby perfectly crimping a boot, which it is only necessary, then, to place upon a suitable form to dry; the leather, by continuing the downward movement of the form sutilciently'therefor, being completely drawn lout from and between the plates, thereby removing all imprints. By passing the leather over the entire length of the corrugated plates E, as hereinabove explained, the perfect crimping of it is obtained, forif the surfaces of the. plates were smooth no great advantage would be .secured by passing the leather through them, as is obvious without further explanation. The pressure upon the leather being crimped may be regulated at pleasure by simply adjusting the screw-shaft K according to the pressure desired, and to suit the'` thickness of the leather. The various parts composingmy improved machine may be made of any materials which are suitable, and therefore I do not intend to limit myself to any one particular material of which they are made, nor to any-particular form of cavities or depressions in the plates'E E, as they can be varied in many respects, andzyet the same result, as hereinabove stated, be accomplished. n i i l i What I claim as new, and desire to secure by LettersPatent, isy A Crimping beets by passing or drawing the leather down and between two stationary or fixed plates, having their surfaces opposite to each other, or withwhich the'vl'eather comes in contact, corrugated or formed' with a lseries .of circular or other suitable shaped cavities or depressions, substantially asherein described.

I also claim so arranging the corrugated plates E Ey'or their equivalents, that they can be adjusted to any degree of pressure upon the leather being crimped, substantially as and for the purpose descibed.

JOHN JO SLYN.

Witnesses:

D'. W. JONES, n l R. Y. MAIN. 

